1 files changed, 86 insertions, 0 deletions
diff --git a/dom/media/ipc/RemoteDecoderChild.h b/dom/media/ipc/RemoteDecoderChild.h
new file mode 100644
index 0000000000..b300f6226f
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+++ b/dom/media/ipc/RemoteDecoderChild.h
@@ -0,0 +1,86 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#ifndef include_dom_media_ipc_RemoteDecoderChild_h
+#define include_dom_media_ipc_RemoteDecoderChild_h
+
+#include <functional>
+
+#include "mozilla/PRemoteDecoderChild.h"
+#include "mozilla/RemoteDecoderManagerChild.h"
+#include "mozilla/ShmemRecycleAllocator.h"
+
+namespace mozilla {
+
+class RemoteDecoderManagerChild;
+using mozilla::MediaDataDecoder;
+using mozilla::ipc::IPCResult;
+
+class RemoteDecoderChild : public ShmemRecycleAllocator<RemoteDecoderChild>,
+                           public PRemoteDecoderChild {
+  friend class PRemoteDecoderChild;
+
+ public:
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(RemoteDecoderChild);
+
+  explicit RemoteDecoderChild(RemoteDecodeIn aLocation);
+
+  void ActorDestroy(ActorDestroyReason aWhy) override;
+
+  // This interface closely mirrors the MediaDataDecoder plus a bit
+  // (DestroyIPDL) to allow proxying to a remote decoder in RemoteDecoderModule.
+  RefPtr<MediaDataDecoder::InitPromise> Init();
+  RefPtr<MediaDataDecoder::DecodePromise> Decode(
+      const nsTArray<RefPtr<MediaRawData>>& aSamples);
+  RefPtr<MediaDataDecoder::DecodePromise> Drain();
+  RefPtr<MediaDataDecoder::FlushPromise> Flush();
+  RefPtr<mozilla::ShutdownPromise> Shutdown();
+  bool IsHardwareAccelerated(nsACString& aFailureReason) const;
+  nsCString GetDescriptionName() const;
+  void SetSeekThreshold(const media::TimeUnit& aTime);
+  MediaDataDecoder::ConversionRequired NeedsConversion() const;
+  void DestroyIPDL();
+
+  // Called from IPDL when our actor has been destroyed
+  void IPDLActorDestroyed();
+
+  RemoteDecoderManagerChild* GetManager();
+
+ protected:
+  virtual ~RemoteDecoderChild();
+  void AssertOnManagerThread() const;
+
+  virtual MediaResult ProcessOutput(DecodedOutputIPDL&& aDecodedData) = 0;
+  virtual void RecordShutdownTelemetry(bool aForAbnormalShutdown) {}
+
+  RefPtr<RemoteDecoderChild> mIPDLSelfRef;
+  MediaDataDecoder::DecodedData mDecodedData;
+  const RemoteDecodeIn mLocation;
+
+ private:
+  const nsCOMPtr<nsISerialEventTarget> mThread;
+
+  MozPromiseHolder<MediaDataDecoder::InitPromise> mInitPromise;
+  MozPromiseRequestHolder<PRemoteDecoderChild::InitPromise> mInitPromiseRequest;
+  MozPromiseHolder<MediaDataDecoder::DecodePromise> mDecodePromise;
+  MozPromiseHolder<MediaDataDecoder::DecodePromise> mDrainPromise;
+  MozPromiseHolder<MediaDataDecoder::FlushPromise> mFlushPromise;
+  MozPromiseHolder<mozilla::ShutdownPromise> mShutdownPromise;
+
+  void HandleRejectionError(
+      const ipc::ResponseRejectReason& aReason,
+      std::function<void(const MediaResult&)>&& aCallback);
+
+  nsCString mHardwareAcceleratedReason;
+  nsCString mDescription;
+  bool mIsHardwareAccelerated = false;
+  bool mRemoteDecoderCrashed = false;
+  MediaDataDecoder::ConversionRequired mConversion =
+      MediaDataDecoder::ConversionRequired::kNeedNone;
+};
+
+}  // namespace mozilla
+
+#endif  // include_dom_media_ipc_RemoteDecoderChild_h